Class definition not found when working with Binary Objects

CacheStoreTest

    public void testLoad() {
        IgniteCache<BinaryObject, BinaryObject> cache = ignite.getOrCreateCache(getConfig()).withKeepBinary();

        String keyValue = "3M Company";
        BinaryObjectBuilder keyBuilder = ignite.binary().builder("keyType")
                .setField("f1", keyValue).hashCode(fieldValue.hashCode());

        BinaryObject value = cache.get(keyBuilder.build());
        logger.info("Loaded value {} for key {}", value, keyValue);
    }

    public static CacheConfiguration<BinaryObject, BinaryObject> getConfig() {
        CacheConfiguration<BinaryObject, BinaryObject> cfg = new CacheConfiguration<>();
        cfg.setName("testCache);
        cfg.setCacheMode(CacheMode.REPLICATED);
        cfg.setAtomicityMode(CacheAtomicityMode.TRANSACTIONAL);
        cfg.setBackups(1);
        cfg.setWriteSynchronizationMode(CacheWriteSynchronizationMode.PRIMARY_SYNC);

        cfg.setCacheStoreFactory(FactoryBuilder.factoryOf(MyCacheStore.class));
        // Configure JDBC session listener.
        cfg.setCacheStoreSessionListenerFactories(() -> {
            CacheJdbcStoreSessionListener lsnr = new CacheJdbcStoreSessionListener();
            lsnr.setDataSource(JdbcConnectionPool.create(connectionUrl);
            return lsnr;
        });

        cfg.setReadThrough(true);
        cfg.setWriteThrough(true);

        return cfg;
    }


public class MyCacheStore extends CacheStoreAdapter<BinaryObject, BinaryObject> {

    @CacheStoreSessionResource
    private CacheStoreSession ses;
    @IgniteInstanceResource
    private Ignite ignite;

    private Logger logger = LoggerFactory.getLogger(CustomerAttributeCacheStore.class);


    @Override
    public BinaryObject load(BinaryObject key) throws CacheLoaderException {
        logger.info("Loading value for key");
        Connection conn = ses.attachment();

        try(PreparedStatement st = conn.prepareStatement("select F2, F3 from CACHE_TABLE where F1 = ?")) {
            st.setString(1, key.field("F1"));
            ResultSet rs = st.executeQuery();

            return rs.next() ? ignite.binary().builder(table.getCacheValueType())
                                        .setField("F2", rs.getString("F2"))
                                        .setField("F3", rs.getString("F3")).build() : null;

        } catch (SQLException e) {
            throw new CacheLoaderException("Failed to load object [key=" + key + ']', e);
        }
    }
    
    //skipping the write and delete methods
}